EP3480050A1 - Electric mining dump truck - Google Patents
Electric mining dump truck Download PDFInfo
- Publication number
- EP3480050A1 EP3480050A1 EP17818941.1A EP17818941A EP3480050A1 EP 3480050 A1 EP3480050 A1 EP 3480050A1 EP 17818941 A EP17818941 A EP 17818941A EP 3480050 A1 EP3480050 A1 EP 3480050A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electric
- frame
- battery cabinet
- electric wheel
- dump truck
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
- F04C13/001—Pumps for particular liquids
- F04C13/002—Pumps for particular liquids for homogeneous viscous liquids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5866—Cooling at last part of the working fluid in a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/40—Electric motor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present disclosure relates to the field of mining dump trucks.
- a mining dump truck is a vehicle that unloads cargo through hydraulic or mechanical lifting, and is usually used in mines or pits of poor road conditions, and is also referred to as a tipper.
- Existing mining dump trucks mainly include mechanical wheel dump trucks and electric wheel dump trucks.
- An electric wheel dump truck consists of a frame, an engine, an electric generator, an electric wheel, an electric control system, a hydraulic lifting mechanism, a bed, a cab, and the like.
- the cab controls movement of the truck, the engine drives the electric generator to generate electricity, and the electricity generated by the electric generator is rectified and then supplied to the electric control system and the electric wheel.
- the engine serves as a power source for the hydraulic lifting mechanism and the like.
- the hydraulic lifting mechanism provides power for the bed.
- the electric control system controls actions of the hydraulic lifting mechanism, the engine, the electric generator, and the electric wheel.
- the electric wheel is usually air cooled.
- the present disclosure provides an electric mining dump truck.
- the electric mining dump truck includes a frame, an axle, an electric wheel assembly, a power battery assembly, an electric control system, a hydraulic system, a cooling system, a bed and a cab assembly, where the cab assembly is disposed on a front end of the frame; the bed is mounted on a rear end of the frame; the axle includes a front axle and a rear axle, the front axle and the rear axle being mounted on the front end and the rear end of the frame, respectively, the electric wheel assembly being mounted on the rear axle; the power battery assembly includes a battery cabinet configured to supply electric energy to various electric components; the electric control system is configured to control the electric wheel assembly, the power battery assembly, the hydraulic system and the cooling system; the hydraulic system is configured to provide hydraulic oil for various types of hydraulic apparatuses; and the cooling system is configured to cool various heat generation and heat transfer components.
- a weight of the power battery assembly of the electric mining dump truck is the same as a weight of the engine and the electric generator of the conventional electric wheel dump truck, and electrification is realized with the curb weight of the truck substantially unchanged, so that a power system and an electric control system of the truck are significantly simplified, and maintenance is more convenient.
- noise pollution and emission pollution are greatly reduced, and comfort of a driver's working environment is improved.
- the electric mining dump truck does not consume excessive fuel. Because electricity costs much less than oil, using a pure electric dump truck can reduce operating costs of mine, and bring quite considerable economic benefits.
- the frame is a box-girder frame which includes two longitudinal beams disposed on both sides
- the battery cabinet includes a frame battery cabinet mounted on the frame, a supporting and fixing structure for fixedly mounting the frame battery cabinet being provided on the two longitudinal beams.
- the supporting and fixing structure includes saddles symmetrically disposed over the two longitudinal beams and brackets disposed underneath the two longitudinal beams, at least a portion of the frame battery cabinet being supported and fixed in space between the two longitudinal beams by means of the saddles and the brackets.
- Such supporting and fixing structure of the battery cabinet not only meets a structural strength requirement, but also saves internal space of the frame as much as possible, so that more batteries can be arranged on the truck to increase an endurance mileage.
- a large battery cabinet can facilitate assembly and disassembly.
- the battery cabinet is located in the middle of the box-girder frame, so that batteries are all prevented from being knocked. This significantly improves safety of the battery cabinet.
- the battery cabinet is on a relatively low location, lowering a center of gravity of the truck while meeting a ground clearance.
- a ratio of front axle load to rear axle load is close to 50%: 50% in a case of no load, and therefore the truck runs more smoothly.
- the frame battery cabinet includes a first battery cabinet and the second battery cabinet;
- the supporting and fixing structure includes a first supporting and fixing structure and a second supporting and fixing structure that are disposed in a front-to-rear direction of the truck; where the first supporting and fixing structure includes a first saddle symmetrically disposed over the two longitudinal beams and a first bracket disposed underneath the two longitudinal beams, the first battery cabinet being fixed on the first saddle and the first bracket;
- the second supporting and fixing structure includes a second saddle symmetrically disposed over the two longitudinal beams and a second bracket disposed underneath the two longitudinal beams, the second battery cabinet being fixed on the second saddle and the second bracket.
- mounting holes are provided on all of the frame battery cabinet, the brackets and the saddles, the frame battery cabinet being fixedly connected to the brackets and the saddles through mating of bolts and the mounting holes; where rubber cushions are further mounted between the brackets and the frame battery cabinet and between the saddles and the frame battery cabinet.
- the rubber cushion can further reduce an impact on the battery cabinet during running of the truck.
- an operating platform is provided on the electric mining dump truck, the cab assembly being mounted on a left side of the operating platform; and the electric control system is integrated in an electric control cabinet, the battery cabinet further including a platform battery cabinet mounted on the operating platform, the platform battery cabinet including a third battery cabinet, the third battery cabinet and the electric control cabinet being mounted on the operating platform.
- the hydraulic system includes a first drive motor, a second drive motor, a single vane pump, a double vane pump, a plunger pump, a lifting hydraulic cylinder, a steering cylinder, and an energy accumulator;
- the single vane pump is driven by the first drive motor, and a hydraulic oil outlet of the single vane pump is communicated to the lifting hydraulic cylinder through a pipe;
- the double vane pump and the plunger pump are connected in series, both being driven by the second drive motor, a hydraulic oil outlet of the plunger pump being connected to the steering cylinder and the energy accumulator, respectively.
- the first drive motor independently drives the single vane pump
- the second drive motor independently drives the double vane pump and the plunger pump, to provide power through hydraulic steering, braking, and lifting.
- a drive mechanism between an engine and a hydraulic pump of a conventional electric wheel dump truck is removed, and drive efficiency is improved, so that working of the hydraulic pump can be more precisely controlled, and in addition, arrangement of the motor facilitates mounting and maintenance.
- precise control of hydraulic steering, braking, and lifting of the motor-driven hydraulic pump according to the present disclosure is easier to implement, and in addition, it is ensured that steering, braking, and lifting are not affected by each other.
- the cooling system includes a hydraulic oil cooling system, a hydraulic drive motor cooling system, an electric wheel cooling system, and a battery air conditioning electric control cabinet cooling system.
- the electric wheel cooling system includes a right electric wheel cooling subsystem mounted on a right side of the rear axle for cooling a right electric wheel, and a left electric wheel cooling subsystem mounted on a left side of the rear axle for cooling a left electric wheel;
- the right electric wheel cooling subsystem includes an oil filter, an oil pump motor, a heat exchanger, a high pressure water pump, and a right heat sink;
- the high pressure water pump is disposed between the right heat sink and the heat exchanger, and the right heat sink, the high pressure water pump, and the heat exchanger forming a cooling water loop;
- the oil pump motor and the oil filter are disposed between the heat exchanger and the right electric wheel, and the heat exchanger, the oil pump motor, the oil filter and the right electric wheel forming a cooling oil loop;
- the left electric wheel cooling subsystem includes an oil filter, an oil pump motor, a heat exchanger, a high pressure water pump, and a left heat sink;
- the high pressure water pump is disposed between the left heat sink and the heat exchanger
- the electric wheel cooling system has high cooling efficiency, and enables the truck to have high space utilization when arranged on the truck.
- the left electric wheel cooling subsystem and the right electric wheel cooling subsystem are independent of each other, and therefore safety of the left electric wheel and the right electric wheel during long-time driving at a suitable temperature is better ensured.
- the electric wheel cooling system has higher space utilization, a better cooling effect, and is easier to be controlled, so that the electric wheel has a longer life.
- the oil filters, the oil pump motors, and the heat exchangers in the right electric wheel cooling subsystem and the left electric wheel cooling subsystem are symmetrically arranged inside the frame; the oil filter and heat exchanger can connect to a pipeline of the electric wheel in a convenient way, helping protect a product in a harsh mine environment, and the left heat sink and the right heat sink are symmetrically suspended on a lower part of the front end of the truck.
- the electric wheel cooling system allows for a large surface in contact with air, and is convenient to mount and maintain, and has a more aesthetic appearance.
- the electric mining dump truck includes a frame 1, an axle, an electric wheel assembly, a power battery assembly, an electric control system, a hydraulic system, a cooling system, a bed 4, and a cab assembly 5.
- the cab assembly 5 is disposed on a front end of the frame 1.
- the bed 4 is mounted on a rear end of the frame 1.
- the axle includes a front axle 2 and a rear axle 3.
- the front axle 2 is mounted on the front end of the frame 1, and the rear axle 3 is mounted on the rear end of the frame 1.
- the electric wheel assembly is mounted on the rear axle 3.
- the power battery assembly includes a battery cabinet configured to supply electric energy to various electric components.
- the battery cabinet may include a frame battery cabinet mounted on the frame 1.
- the "electric component” described herein is any apparatus that requires electric energy, including the foregoing electric wheel assembly, electric control system, hydraulic system, cooling system, cab assembly 5, and the like.
- the electric control system is configured to control the electric wheel assembly, the hydraulic system, and the cooling system.
- the hydraulic system is configured to provide hydraulic oil for various hydraulic apparatuses.
- the cooling system is configured to cool various heat generation and heat transfer components.
- the so-called hydraulic apparatus includes various hydraulic pumps, hydraulic cylinders, accumulators, and the like powered by means of hydraulic oil, such as a single vane pump 1e, a double vane pump 1f, a plunger pump 1g, a lifting hydraulic cylinder, a steering cylinder, an energy accumulator, and the like in the following text.
- the so-called heat generation/heat transfer component is various structures that generate heat or transfer heat during the use, and need to be cooled to ensure normal operation of the structures, such as the electric wheel assembly, the hydraulic system through which hydraulic oil flows, a motor that drives the hydraulic pump, a battery, an electric control cabinet 6, the cab assembly 5, and the like in the following text.
- the electric mining dump truck provided according to the present disclosure is mainly different in that the electric mining dump truck uses a power battery assembly to replace an engine and an electric generator. Because the electric mining dump truck does not have an engine, a pump in the hydraulic system needs to be replaced with a motor-driven hydraulic pump.
- the frame 1 is a box-girder frame shown in FIG. 1 to FIG. 3 , and includes two longitudinal beams 1k disposed on left and right sides.
- Each longitudinal beam 1k is generally a triangular metal plate component, and a supporting and fixing structure for fixedly mounting the frame battery cabinet is provided on the two longitudinal beams 1k.
- the supporting and fixing structure not only supports the frame battery cabinet, but also limits the frame battery cabinet to prevent the frame battery cabinet from swaying in a front, rear, left or right direction.
- For a specific structure of the frame battery cabinet refer to an existing method for mounting a battery cabinet on some electric cars or electric buses.
- the supporting and fixing structure includes saddles symmetrically disposed over the two longitudinal beams 1k and brackets disposed underneath the two longitudinal beams 1k. At least a portion of the frame battery cabinet is supported and fixed between the two longitudinal beams 1k by means of the saddles and the brackets. "At least a portion" herein means that when the power battery assembly includes a plurality of battery cabinets, if there is no enough space on the frame 1 to mount all the battery cabinets, unmounted battery cabinets need to be mount on other locations.
- Such supporting and fixing structure of the frame battery cabinet not only meets a structural strength requirement, but also saves internal space of the frame 1 as much as possible, so that more batteries can be arranged on the truck to increase an endurance mileage.
- a large frame battery cabinet can facilitate assembly and disassembly.
- the frame battery cabinet is located in the middle of the box-girder frame 1, so that batteries are all prevented from being knocked. This significantly improves safety of the frame battery cabinet.
- the frame battery cabinet is on a relatively low location, lowering a center of gravity of the truck while meeting a ground clearance.
- a ratio of front axle load to rear axle load is close to 50%: 50% in a case of no load, and therefore the truck runs more smoothly.
- a quantity of frame battery cabinets is not particularly limited, and depends on power required for truck overall and a size of the frame battery cabinet.
- the frame battery cabinet includes a first battery cabinet 7a and the second battery cabinet 7b.
- the supporting and fixing structure includes a first supporting and fixing structure and a second supporting and fixing structure that are disposed in a front-to-rear direction of the truck.
- the first supporting and fixing structure includes a first saddle 1a symmetrically-disposed over the two longitudinal beams 1k and a first bracket 1c disposed underneath the two longitudinal beams 1k, and the first battery cabinet 7a is fixed on the first saddle 1a and the first bracket 1c.
- the second supporting and fixing structure includes a second saddle 1b symmetrically disposed over the two longitudinal beams 1k and a second bracket 1d disposed underneath the two longitudinal beams 1k, and the second battery cabinet 7b is fixed on the second saddle 1b and the second bracket 1d.
- mounting holes are provided on all of the frame battery cabinet, the brackets, and the saddles (not marked in the figure), and the frame battery cabinet is fixedly connected to the brackets and the saddles through mating of bolts and the mounting holes.
- rubber cushions are further mounted between the brackets and the frame battery cabinet and between the saddles and the frame battery cabinet.
- the rubber cushion can further reduce an impact on the frame battery cabinet during running of the truck.
- the electric mining dump truck is further provided with an operating platform 8, and the cab assembly 5 is mounted on a left side of the operating platform 8.
- the battery cabinet may include a platform battery cabinet mounted on the operating platform 8.
- the electric control system is integrated in the electric control cabinet 6, the platform battery cabinet includes a third battery cabinet 7c, and the third battery cabinet 7c and the electric control cabinet 6 are mounted on the operating platform 8.
- the third battery cabinet 7c is mounted on a right side of the operating platform 8
- the electric control cabinet 6 is mounted on an intermediate location of the operating platform 8, that is, located between the cab assembly 5 and the third battery cabinet 7c.
- a charging interface 11 is further mounted at a lower location on the frame 1, and the battery cabinet 7 is charged through the charging interface 11.
- the power battery assembly consists of three battery cabinets, to ensure an endurance mileage of the truck.
- the first battery cabinet 7a and the second battery cabinet 7b are arranged between the two longitudinal beams 1k of the frame 1.
- the first battery cabinet 7a is disposed on a front location
- the second battery cabinet 7b is disposed on a rear position, effectively balancing an axle load ratio of the truck.
- the locations of the first battery cabinet 7a and the second battery cabinet 7b are relatively low relative to a height of such type of truck, and therefore stability of the truck can be significantly improved during running.
- the third battery cabinet 7c is arranged on the right side of the operating platform 8, to facilitate for mounting and maintenance, while effectively balancing a ratio of left and right wheel load of the truck.
- a ladder having a guardrail is further mounted, to facilitate driver's access to the cab assembly located on the operating platform 8.
- a lower end of the escalator is close to ground, so that it can be convenient for a driver to go from a lower location to the operating platform 8 through the ladder.
- the hydraulic system includes a first drive motor 1h, a second drive motor 1j, a single vane pump 1e, a double vane pump 1f, a plunger pump 1g, a lifting hydraulic cylinder, a steering cylinder, and an energy accumulator.
- the single vane pump 1e is driven by the first drive motor 1h, and a hydraulic oil outlet of the single vane pump is communicated to the lifting hydraulic cylinder through a pipe.
- the lifting hydraulic cylinder controls a lifting action of the bed 4.
- the double vane pump 1f and the plunger pump 1g are connected in series, and are driven by the second drive motor 1j, and a hydraulic oil outlet of the plunger pump 1g is connected to the steering cylinder and the energy accumulator.
- the first drive motor 1h independently drives the single vane pump 1e
- the second drive motor 1j independently drives the double vane pump 1f and the plunger pump 1g, to provide power through hydraulic steering, braking, and lifting.
- a drive mechanism between an engine and a hydraulic pump of a conventional electric wheel dump truck is removed, and drive efficiency is improved, so that working of the hydraulic pump can be more precisely controlled, and in addition, arrangement of the motor facilitates mounting and maintenance.
- the first drive motor 1h and the second drive motor 1j are mounted inside the frame 1 through a bell-shaped cover and a hydraulic pump. Compared with that three hydraulic pumps are driven by power from an engine in the conventional electric wheel dump truck, a connection between the motor and the hydraulic pump is convenient and reliable, a drive structure is simple, and it is easier to control a working status of the hydraulic pump in real time by controlling the motor.
- the cooling system includes a hydraulic oil cooling system, a hydraulic drive motor cooling system, an electric wheel cooling system, and a battery air conditioning electric control cabinet cooling system.
- the hydraulic oil cooling system is configured to cool heated hydraulic oil, and mainly include a heat sink 10 mounted on the right side of the operating platform 8.
- the heat sink 10 is suspended on the right side of the operating platform 8, and has a good ventilation effect and high cooling efficiency.
- the hydraulic drive motor cooling system and the battery air conditioning electric control cabinet cooling system use a water-cooling method, and mainly consist of a water tank, the heat sink 10, and a water pump.
- the foregoing hydraulic oil cooling system, hydraulic drive motor cooling system, and battery air conditioning electric control cabinet cooling system can be designed in a way the same as a conventional vehicle without any particular limitation.
- the electric wheel cooling system includes a right electric wheel cooling subsystem that is used to cool a right electric wheel 3a and that is mounted on a right side of the rear axle 3, and a left electric wheel cooling subsystem that is used to cool a left electric wheel 3b and that is mounted on a left side of the rear axle 3.
- An upper loop is the right electric wheel cooling subsystem, and a lower loop is the left electric wheel cooling subsystem.
- a direction indicated by an arrow in the figure is a direction in which the truck is heading.
- the right electric wheel cooling subsystem includes an oil filter 10e, an oil pump motor 10d, a heat exchanger 10c, a high pressure water pump 10b, and a right heat sink 10a.
- the high pressure water pump 10b is disposed between the right heat sink 10a and the heat exchanger 10c, and the right heat sink 10a, the high pressure water pump 10b, and the heat exchanger 10c form a cooling water loop.
- the oil pump motor 10d and the oil filter 10e are disposed between the heat exchanger 10c and the right electric wheel 3a, and the heat exchanger 10c, the oil pump motor 10d, the oil filter 10e, and the right electric wheel 3a form a cooling oil loop.
- the left electric wheel cooling subsystem includes an oil filter 10e, an oil pump motor 10d, a heat exchanger 10c, a high pressure water pump 10b, and a left heat sink 10g.
- the high pressure water pump 10b is disposed between the left heat sink 10g and the heat exchanger 10c, and the left heat sink 10g, the high pressure water pump 10b, and the heat exchanger 10c form a cooling water loop.
- the oil pump motor 10d and the oil filter 10e are disposed between the heat exchanger 10c and the left electric wheel 3b, and the heat exchanger 10c, the oil pump motor 10d, the oil filter 10e, and the left electric wheel 3b form a cooling oil loop.
- the foregoing right electric wheel cooling subsystem and the left electric wheel cooling subsystem may be independent of each other.
- the right electric wheel cooling subsystem and the left electric wheel cooling subsystem may independently use the high pressure water pump 10b, the heat exchanger 10c, the oil pump motor 10d, and the oil filter 10e, or may jointly use the high pressure water pump 10b, the heat exchanger 10c, the oil pump motor 10d, and the oil filter 10e.
- the right electric wheel cooling subsystem and the left electric wheel cooling subsystem use the foregoing mode of being independent of each other.
- a working principle of the electric wheel cooling system is as follows: high-temperature coolant oil from an electric wheel first passes through the oil filter 10e, and then arrives at the heat exchanger 10c (or referred to as an oil cooler) after passing through the oil pump motor 10d; heat is exchanged between the high-temperature coolant oil and cooling water in the heat exchanger 10c, cooled coolant oil returns to the electric wheel to cool the motor, and the cooling water with heat of the coolant oil is dissipated by means of the foregoing left heat sink 10g and right heat sink 10a, and then returns to the heat exchanger 10c through respective high-pressure water pumps 10b, to take in heat of coolant oil again, and so on.
- the electric wheel cooling system has high cooling efficiency, and enables the truck to have high space utilization when arranged on the truck.
- the left electric wheel cooling subsystem and the right electric wheel cooling subsystem are independent of each other, and therefore safety of the left electric wheel and the right electric wheel during long-time driving at a suitable temperature is better ensured.
- the electric wheel cooling system has higher space utilization, a better cooling effect, and is easier to be controlled, so that the electric wheel has a longer life.
- the oil filters, the oil pump motors, and the heat exchangers in the right electric wheel cooling subsystem and the left electric wheel cooling subsystem are symmetrically arranged inside the frame 1.
- the oil filter and heat exchanger can connect to a pipeline of the electric wheel in a convenient way, helping protect a product in a harsh mine environment, and the left heat sink and the right heat sink are symmetrically suspended on a lower part of the front end of the truck.
- the electric wheel cooling system allows for a large surface in contact with air, and is convenient to mount and maintain, and has a more aesthetic appearance.
- the electric mining dump truck provided according to the present disclosure replaces the conventional mining dump truck in real sense, implements energy conservation and emission reduction of mine and improves an economic benefit of mine, and is a great technological innovation of the mining dump truck.
- a weight of the power battery assembly of the electric mining dump truck is the same as a weight of the engine and the electric generator of the conventional electric wheel dump truck, and electrification is realized with the curb weight of the truck substantially unchanged, so that a power system and an electric control system of the truck are significantly simplified, and maintenance is more convenient.
- noise pollution and emission pollution are greatly reduced, and comfort of a driver's working environment is improved.
- the electric mining dump truck does not consume excessive fuel. Because electricity costs much less than oil, using a pure electric dump truck can reduce operating costs of mine, and bring quite considerable economic benefits.
Abstract
Description
- The present disclosure relates to the field of mining dump trucks.
- A mining dump truck is a vehicle that unloads cargo through hydraulic or mechanical lifting, and is usually used in mines or pits of poor road conditions, and is also referred to as a tipper. Existing mining dump trucks mainly include mechanical wheel dump trucks and electric wheel dump trucks. An electric wheel dump truck consists of a frame, an engine, an electric generator, an electric wheel, an electric control system, a hydraulic lifting mechanism, a bed, a cab, and the like. The cab controls movement of the truck, the engine drives the electric generator to generate electricity, and the electricity generated by the electric generator is rectified and then supplied to the electric control system and the electric wheel. In addition, the engine serves as a power source for the hydraulic lifting mechanism and the like. The hydraulic lifting mechanism provides power for the bed. The electric control system controls actions of the hydraulic lifting mechanism, the engine, the electric generator, and the electric wheel. The electric wheel is usually air cooled.
- However, the foregoing electric wheel dump truck system is excessively complicated, and maintenance costs are high. In addition, an engine used for a mine electric wheel dump truck needs a large displacement, that is, needs to consume a large amount of diesel and discharges a large amount of pollutants. Moreover, the engine generates loud noise, severely affecting health of a driver and people in a workplace.
- To resolve the problem that an existing electric wheel dump truck system is excessively complicated, has high maintenance costs and causes noise pollution to the environment and personnel, the present disclosure provides an electric mining dump truck.
- The electric mining dump truck provided according to the present disclosure includes a frame, an axle, an electric wheel assembly, a power battery assembly, an electric control system, a hydraulic system, a cooling system, a bed and a cab assembly, where
the cab assembly is disposed on a front end of the frame; the bed is mounted on a rear end of the frame;
the axle includes a front axle and a rear axle, the front axle and the rear axle being mounted on the front end and the rear end of the frame, respectively, the electric wheel assembly being mounted on the rear axle;
the power battery assembly includes a battery cabinet configured to supply electric energy to various electric components;
the electric control system is configured to control the electric wheel assembly, the power battery assembly, the hydraulic system and the cooling system; the hydraulic system is configured to provide hydraulic oil for various types of hydraulic apparatuses; and the cooling system is configured to cool various heat generation and heat transfer components. - By means of the electric mining dump truck provided according to the present disclosure, a weight of the power battery assembly of the electric mining dump truck is the same as a weight of the engine and the electric generator of the conventional electric wheel dump truck, and electrification is realized with the curb weight of the truck substantially unchanged, so that a power system and an electric control system of the truck are significantly simplified, and maintenance is more convenient. Thus, noise pollution and emission pollution are greatly reduced, and comfort of a driver's working environment is improved. Compared with the conventional electric wheel dump truck, the electric mining dump truck does not consume excessive fuel. Because electricity costs much less than oil, using a pure electric dump truck can reduce operating costs of mine, and bring quite considerable economic benefits.
- Further, the frame is a box-girder frame which includes two longitudinal beams disposed on both sides, and the battery cabinet includes a frame battery cabinet mounted on the frame, a supporting and fixing structure for fixedly mounting the frame battery cabinet being provided on the two longitudinal beams.
- Further, the supporting and fixing structure includes saddles symmetrically disposed over the two longitudinal beams and brackets disposed underneath the two longitudinal beams, at least a portion of the frame battery cabinet being supported and fixed in space between the two longitudinal beams by means of the saddles and the brackets. Such supporting and fixing structure of the battery cabinet not only meets a structural strength requirement, but also saves internal space of the frame as much as possible, so that more batteries can be arranged on the truck to increase an endurance mileage. In addition, a large battery cabinet can facilitate assembly and disassembly. The battery cabinet is located in the middle of the box-girder frame, so that batteries are all prevented from being knocked. This significantly improves safety of the battery cabinet. In addition, the battery cabinet is on a relatively low location, lowering a center of gravity of the truck while meeting a ground clearance. Moreover, a ratio of front axle load to rear axle load is close to 50%: 50% in a case of no load, and therefore the truck runs more smoothly.
- Further, the frame battery cabinet includes a first battery cabinet and the second battery cabinet; the supporting and fixing structure includes a first supporting and fixing structure and a second supporting and fixing structure that are disposed in a front-to-rear direction of the truck; where the first supporting and fixing structure includes a first saddle symmetrically disposed over the two longitudinal beams and a first bracket disposed underneath the two longitudinal beams, the first battery cabinet being fixed on the first saddle and the first bracket; the second supporting and fixing structure includes a second saddle symmetrically disposed over the two longitudinal beams and a second bracket disposed underneath the two longitudinal beams, the second battery cabinet being fixed on the second saddle and the second bracket.
- Further, mounting holes are provided on all of the frame battery cabinet, the brackets and the saddles, the frame battery cabinet being fixedly connected to the brackets and the saddles through mating of bolts and the mounting holes; where rubber cushions are further mounted between the brackets and the frame battery cabinet and between the saddles and the frame battery cabinet. The rubber cushion can further reduce an impact on the battery cabinet during running of the truck.
- Further, an operating platform is provided on the electric mining dump truck, the cab assembly being mounted on a left side of the operating platform; and the electric control system is integrated in an electric control cabinet, the battery cabinet further including a platform battery cabinet mounted on the operating platform, the platform battery cabinet including a third battery cabinet, the third battery cabinet and the electric control cabinet being mounted on the operating platform.
- Further, the hydraulic system includes a first drive motor, a second drive motor, a single vane pump, a double vane pump, a plunger pump, a lifting hydraulic cylinder, a steering cylinder, and an energy accumulator; the single vane pump is driven by the first drive motor, and a hydraulic oil outlet of the single vane pump is communicated to the lifting hydraulic cylinder through a pipe;
the double vane pump and the plunger pump are connected in series, both being driven by the second drive motor, a hydraulic oil outlet of the plunger pump being connected to the steering cylinder and the energy accumulator, respectively. In this hydraulic system, the first drive motor independently drives the single vane pump, and the second drive motor independently drives the double vane pump and the plunger pump, to provide power through hydraulic steering, braking, and lifting. A drive mechanism between an engine and a hydraulic pump of a conventional electric wheel dump truck is removed, and drive efficiency is improved, so that working of the hydraulic pump can be more precisely controlled, and in addition, arrangement of the motor facilitates mounting and maintenance. Compared with that the engine drives the hydraulic pump on the conventional electric wheel dump truck, precise control of hydraulic steering, braking, and lifting of the motor-driven hydraulic pump according to the present disclosure is easier to implement, and in addition, it is ensured that steering, braking, and lifting are not affected by each other. - Further, the cooling system includes a hydraulic oil cooling system, a hydraulic drive motor cooling system, an electric wheel cooling system, and a battery air conditioning electric control cabinet cooling system.
- Further, the electric wheel cooling system includes a right electric wheel cooling subsystem mounted on a right side of the rear axle for cooling a right electric wheel, and a left electric wheel cooling subsystem mounted on a left side of the rear axle for cooling a left electric wheel; the right electric wheel cooling subsystem includes an oil filter, an oil pump motor, a heat exchanger, a high pressure water pump, and a right heat sink; the high pressure water pump is disposed between the right heat sink and the heat exchanger, and the right heat sink, the high pressure water pump, and the heat exchanger forming a cooling water loop; the oil pump motor and the oil filter are disposed between the heat exchanger and the right electric wheel, and the heat exchanger, the oil pump motor, the oil filter and the right electric wheel forming a cooling oil loop; the left electric wheel cooling subsystem includes an oil filter, an oil pump motor, a heat exchanger, a high pressure water pump, and a left heat sink; the high pressure water pump is disposed between the left heat sink and the heat exchanger, and the left heat sink, the high pressure water pump and the heat exchanger forming a cooling water loop; and the oil pump motor and the oil filter are disposed between the heat exchanger and the left electric wheel, the heat exchanger, the oil pump motor, the oil filter and the left electric wheel forming a cooling oil loop.
- The electric wheel cooling system has high cooling efficiency, and enables the truck to have high space utilization when arranged on the truck. The left electric wheel cooling subsystem and the right electric wheel cooling subsystem are independent of each other, and therefore safety of the left electric wheel and the right electric wheel during long-time driving at a suitable temperature is better ensured. The electric wheel cooling system has higher space utilization, a better cooling effect, and is easier to be controlled, so that the electric wheel has a longer life.
- Further, the oil filters, the oil pump motors, and the heat exchangers in the right electric wheel cooling subsystem and the left electric wheel cooling subsystem are symmetrically arranged inside the frame; the oil filter and heat exchanger can connect to a pipeline of the electric wheel in a convenient way, helping protect a product in a harsh mine environment, and the left heat sink and the right heat sink are symmetrically suspended on a lower part of the front end of the truck. The electric wheel cooling system allows for a large surface in contact with air, and is convenient to mount and maintain, and has a more aesthetic appearance.
-
-
FIG. 1 is a schematic perspective view of an electric mining dump truck in accordance with the present disclosure; -
FIG. 2 is a schematic perspective view of a battery cabinet mounted on a frame in accordance with the present disclosure; -
FIG. 3 is a schematic perspective view of a hydraulic system mounted on a frame in accordance with the present disclosure; and -
FIG. 4 is a schematic diagram of an electric wheel cooling system in accordance with the present disclosure. - In the drawings, 1. Frame; 2. Front axle; 3. Rear axle; 4. Bed; 5. Cab assembly; 6. Electric control cabinet; 7. Battery cabinet; 8. Operating platform; 9. Ladder; 10. Heat sink; 11. Charging interface; 1a. First saddle; 1b. Second saddle; 1c. First bracket; 1d. Second bracket; 1e. Single vane pump; 1f. Double vane pump; 1g. Plunger pump; 1h. First drive motor; 1j. Second drive motor; 1k. Longitudinal beam; 7a. First battery cabinet; 7b. Second battery cabinet; 7c. Third battery cabinet; 3a. Right electric wheel; 3b. Left electric wheel; 10a. Right heat sink; 10b. High pressure water pump; 10c. Heat exchanger; 10d. Oil pump motor; 10e. Oil filter; 10g. Left heat sink.
- To make the technical problems to be solved by the present disclosure, technical solutions, and beneficial effects more comprehensible, the following further describes the present disclosure in detail with reference to the accompanying drawings and embodiments. It should be understood that, specific embodiments described herein are merely used for explaining the present disclosure, but not used for limiting the present disclosure.
- The following illustrates in detail an electric mining dump truck provided according to the present with reference to embodiments. As shown in
FIG. 1 , the electric mining dump truck includes aframe 1, an axle, an electric wheel assembly, a power battery assembly, an electric control system, a hydraulic system, a cooling system, abed 4, and a cab assembly 5. - The cab assembly 5 is disposed on a front end of the
frame 1. Thebed 4 is mounted on a rear end of theframe 1. The axle includes afront axle 2 and arear axle 3. Thefront axle 2 is mounted on the front end of theframe 1, and therear axle 3 is mounted on the rear end of theframe 1. The electric wheel assembly is mounted on therear axle 3. - The power battery assembly includes a battery cabinet configured to supply electric energy to various electric components. The battery cabinet may include a frame battery cabinet mounted on the
frame 1. The "electric component" described herein is any apparatus that requires electric energy, including the foregoing electric wheel assembly, electric control system, hydraulic system, cooling system, cab assembly 5, and the like. - The electric control system is configured to control the electric wheel assembly, the hydraulic system, and the cooling system. The hydraulic system is configured to provide hydraulic oil for various hydraulic apparatuses. The cooling system is configured to cool various heat generation and heat transfer components. The so-called hydraulic apparatus includes various hydraulic pumps, hydraulic cylinders, accumulators, and the like powered by means of hydraulic oil, such as a single vane pump 1e, a double vane pump 1f, a
plunger pump 1g, a lifting hydraulic cylinder, a steering cylinder, an energy accumulator, and the like in the following text. The so-called heat generation/heat transfer component is various structures that generate heat or transfer heat during the use, and need to be cooled to ensure normal operation of the structures, such as the electric wheel assembly, the hydraulic system through which hydraulic oil flows, a motor that drives the hydraulic pump, a battery, anelectric control cabinet 6, the cab assembly 5, and the like in the following text. - Compared with a conventional electric wheel dump truck, the electric mining dump truck provided according to the present disclosure is mainly different in that the electric mining dump truck uses a power battery assembly to replace an engine and an electric generator. Because the electric mining dump truck does not have an engine, a pump in the hydraulic system needs to be replaced with a motor-driven hydraulic pump.
- The
frame 1 is a box-girder frame shown inFIG. 1 to FIG. 3 , and includes twolongitudinal beams 1k disposed on left and right sides. Eachlongitudinal beam 1k is generally a triangular metal plate component, and a supporting and fixing structure for fixedly mounting the frame battery cabinet is provided on the twolongitudinal beams 1k. The supporting and fixing structure not only supports the frame battery cabinet, but also limits the frame battery cabinet to prevent the frame battery cabinet from swaying in a front, rear, left or right direction. For a specific structure of the frame battery cabinet, refer to an existing method for mounting a battery cabinet on some electric cars or electric buses. - Specifically, as shown in
FIG. 2 andFIG. 3 , the supporting and fixing structure includes saddles symmetrically disposed over the twolongitudinal beams 1k and brackets disposed underneath the twolongitudinal beams 1k. At least a portion of the frame battery cabinet is supported and fixed between the twolongitudinal beams 1k by means of the saddles and the brackets. "At least a portion" herein means that when the power battery assembly includes a plurality of battery cabinets, if there is no enough space on theframe 1 to mount all the battery cabinets, unmounted battery cabinets need to be mount on other locations. - Such supporting and fixing structure of the frame battery cabinet not only meets a structural strength requirement, but also saves internal space of the
frame 1 as much as possible, so that more batteries can be arranged on the truck to increase an endurance mileage. In addition, a large frame battery cabinet can facilitate assembly and disassembly. The frame battery cabinet is located in the middle of the box-girder frame 1, so that batteries are all prevented from being knocked. This significantly improves safety of the frame battery cabinet. In addition, the frame battery cabinet is on a relatively low location, lowering a center of gravity of the truck while meeting a ground clearance. Moreover, a ratio of front axle load to rear axle load is close to 50%: 50% in a case of no load, and therefore the truck runs more smoothly. - A quantity of frame battery cabinets is not particularly limited, and depends on power required for truck overall and a size of the frame battery cabinet. In an embodiment, the frame battery cabinet includes a
first battery cabinet 7a and thesecond battery cabinet 7b. - The supporting and fixing structure includes a first supporting and fixing structure and a second supporting and fixing structure that are disposed in a front-to-rear direction of the truck.
- The first supporting and fixing structure includes a first saddle 1a symmetrically-disposed over the two
longitudinal beams 1k and afirst bracket 1c disposed underneath the twolongitudinal beams 1k, and thefirst battery cabinet 7a is fixed on the first saddle 1a and thefirst bracket 1c. - The second supporting and fixing structure includes a second saddle 1b symmetrically disposed over the two
longitudinal beams 1k and a second bracket 1d disposed underneath the twolongitudinal beams 1k, and thesecond battery cabinet 7b is fixed on the second saddle 1b and the second bracket 1d. - In an embodiment, mounting holes are provided on all of the frame battery cabinet, the brackets, and the saddles (not marked in the figure), and the frame battery cabinet is fixedly connected to the brackets and the saddles through mating of bolts and the mounting holes.
- In an embodiment, rubber cushions are further mounted between the brackets and the frame battery cabinet and between the saddles and the frame battery cabinet. The rubber cushion can further reduce an impact on the frame battery cabinet during running of the truck.
- In an embodiment, the electric mining dump truck is further provided with an
operating platform 8, and the cab assembly 5 is mounted on a left side of theoperating platform 8. The battery cabinet may include a platform battery cabinet mounted on theoperating platform 8. - The electric control system is integrated in the
electric control cabinet 6, the platform battery cabinet includes athird battery cabinet 7c, and thethird battery cabinet 7c and theelectric control cabinet 6 are mounted on theoperating platform 8. Specifically, thethird battery cabinet 7c is mounted on a right side of theoperating platform 8, and theelectric control cabinet 6 is mounted on an intermediate location of theoperating platform 8, that is, located between the cab assembly 5 and thethird battery cabinet 7c. - A charging
interface 11 is further mounted at a lower location on theframe 1, and the battery cabinet 7 is charged through the charginginterface 11. In an embodiment, the power battery assembly consists of three battery cabinets, to ensure an endurance mileage of the truck. Thefirst battery cabinet 7a and thesecond battery cabinet 7b are arranged between the twolongitudinal beams 1k of theframe 1. Thefirst battery cabinet 7a is disposed on a front location, and thesecond battery cabinet 7b is disposed on a rear position, effectively balancing an axle load ratio of the truck. In addition, the locations of thefirst battery cabinet 7a and thesecond battery cabinet 7b are relatively low relative to a height of such type of truck, and therefore stability of the truck can be significantly improved during running. Thethird battery cabinet 7c is arranged on the right side of theoperating platform 8, to facilitate for mounting and maintenance, while effectively balancing a ratio of left and right wheel load of the truck. - Because the cab assembly of the electric mining dump truck is mounted on a relatively high location, a ladder having a guardrail is further mounted, to facilitate driver's access to the cab assembly located on the
operating platform 8. A lower end of the escalator is close to ground, so that it can be convenient for a driver to go from a lower location to theoperating platform 8 through the ladder. - According to the present disclosure, as shown in
FIG. 3 , the hydraulic system includes afirst drive motor 1h, a second drive motor 1j, a single vane pump 1e, a double vane pump 1f, aplunger pump 1g, a lifting hydraulic cylinder, a steering cylinder, and an energy accumulator. - The single vane pump 1e is driven by the
first drive motor 1h, and a hydraulic oil outlet of the single vane pump is communicated to the lifting hydraulic cylinder through a pipe. The lifting hydraulic cylinder controls a lifting action of thebed 4. - The double vane pump 1f and the
plunger pump 1g are connected in series, and are driven by the second drive motor 1j, and a hydraulic oil outlet of theplunger pump 1g is connected to the steering cylinder and the energy accumulator. In this hydraulic system, thefirst drive motor 1h independently drives the single vane pump 1e, and the second drive motor 1j independently drives the double vane pump 1f and theplunger pump 1g, to provide power through hydraulic steering, braking, and lifting. A drive mechanism between an engine and a hydraulic pump of a conventional electric wheel dump truck is removed, and drive efficiency is improved, so that working of the hydraulic pump can be more precisely controlled, and in addition, arrangement of the motor facilitates mounting and maintenance. Compared with that the engine drives the hydraulic pump on the conventional electric wheel dump truck, precise control of hydraulic steering, braking, and lifting of the motor-driven hydraulic pump in this embodiment is easier to implement, and in addition, it is ensured that steering, braking, and lifting are not affected by each other. Thefirst drive motor 1h and the second drive motor 1j are mounted inside theframe 1 through a bell-shaped cover and a hydraulic pump. Compared with that three hydraulic pumps are driven by power from an engine in the conventional electric wheel dump truck, a connection between the motor and the hydraulic pump is convenient and reliable, a drive structure is simple, and it is easier to control a working status of the hydraulic pump in real time by controlling the motor. - In an embodiment, the cooling system includes a hydraulic oil cooling system, a hydraulic drive motor cooling system, an electric wheel cooling system, and a battery air conditioning electric control cabinet cooling system.
- The hydraulic oil cooling system is configured to cool heated hydraulic oil, and mainly include a
heat sink 10 mounted on the right side of theoperating platform 8. Theheat sink 10 is suspended on the right side of theoperating platform 8, and has a good ventilation effect and high cooling efficiency. The hydraulic drive motor cooling system and the battery air conditioning electric control cabinet cooling system use a water-cooling method, and mainly consist of a water tank, theheat sink 10, and a water pump. The foregoing hydraulic oil cooling system, hydraulic drive motor cooling system, and battery air conditioning electric control cabinet cooling system can be designed in a way the same as a conventional vehicle without any particular limitation. - In an embodiment, as shown in
FIG. 4 , the electric wheel cooling system includes a right electric wheel cooling subsystem that is used to cool a rightelectric wheel 3a and that is mounted on a right side of therear axle 3, and a left electric wheel cooling subsystem that is used to cool a leftelectric wheel 3b and that is mounted on a left side of therear axle 3. An upper loop is the right electric wheel cooling subsystem, and a lower loop is the left electric wheel cooling subsystem. A direction indicated by an arrow in the figure is a direction in which the truck is heading. - The right electric wheel cooling subsystem includes an
oil filter 10e, anoil pump motor 10d, aheat exchanger 10c, a highpressure water pump 10b, and aright heat sink 10a. The highpressure water pump 10b is disposed between theright heat sink 10a and theheat exchanger 10c, and theright heat sink 10a, the highpressure water pump 10b, and theheat exchanger 10c form a cooling water loop. Theoil pump motor 10d and theoil filter 10e are disposed between theheat exchanger 10c and the rightelectric wheel 3a, and theheat exchanger 10c, theoil pump motor 10d, theoil filter 10e, and the rightelectric wheel 3a form a cooling oil loop. - The left electric wheel cooling subsystem includes an
oil filter 10e, anoil pump motor 10d, aheat exchanger 10c, a highpressure water pump 10b, and aleft heat sink 10g. The highpressure water pump 10b is disposed between theleft heat sink 10g and theheat exchanger 10c, and theleft heat sink 10g, the highpressure water pump 10b, and theheat exchanger 10c form a cooling water loop. Theoil pump motor 10d and theoil filter 10e are disposed between theheat exchanger 10c and the leftelectric wheel 3b, and theheat exchanger 10c, theoil pump motor 10d, theoil filter 10e, and the leftelectric wheel 3b form a cooling oil loop. - The foregoing right electric wheel cooling subsystem and the left electric wheel cooling subsystem may be independent of each other. The right electric wheel cooling subsystem and the left electric wheel cooling subsystem may independently use the high
pressure water pump 10b, theheat exchanger 10c, theoil pump motor 10d, and theoil filter 10e, or may jointly use the highpressure water pump 10b, theheat exchanger 10c, theoil pump motor 10d, and theoil filter 10e. In an embodiment, the right electric wheel cooling subsystem and the left electric wheel cooling subsystem use the foregoing mode of being independent of each other. - A working principle of the electric wheel cooling system is as follows: high-temperature coolant oil from an electric wheel first passes through the
oil filter 10e, and then arrives at theheat exchanger 10c (or referred to as an oil cooler) after passing through theoil pump motor 10d; heat is exchanged between the high-temperature coolant oil and cooling water in theheat exchanger 10c, cooled coolant oil returns to the electric wheel to cool the motor, and the cooling water with heat of the coolant oil is dissipated by means of the foregoingleft heat sink 10g andright heat sink 10a, and then returns to theheat exchanger 10c through respective high-pressure water pumps 10b, to take in heat of coolant oil again, and so on. - The electric wheel cooling system has high cooling efficiency, and enables the truck to have high space utilization when arranged on the truck. The left electric wheel cooling subsystem and the right electric wheel cooling subsystem are independent of each other, and therefore safety of the left electric wheel and the right electric wheel during long-time driving at a suitable temperature is better ensured. The electric wheel cooling system has higher space utilization, a better cooling effect, and is easier to be controlled, so that the electric wheel has a longer life.
- Further, the oil filters, the oil pump motors, and the heat exchangers in the right electric wheel cooling subsystem and the left electric wheel cooling subsystem are symmetrically arranged inside the
frame 1. The oil filter and heat exchanger can connect to a pipeline of the electric wheel in a convenient way, helping protect a product in a harsh mine environment, and the left heat sink and the right heat sink are symmetrically suspended on a lower part of the front end of the truck. The electric wheel cooling system allows for a large surface in contact with air, and is convenient to mount and maintain, and has a more aesthetic appearance. - The electric mining dump truck provided according to the present disclosure replaces the conventional mining dump truck in real sense, implements energy conservation and emission reduction of mine and improves an economic benefit of mine, and is a great technological innovation of the mining dump truck.
- By means of the electric mining dump truck provided according to the present disclosure, a weight of the power battery assembly of the electric mining dump truck is the same as a weight of the engine and the electric generator of the conventional electric wheel dump truck, and electrification is realized with the curb weight of the truck substantially unchanged, so that a power system and an electric control system of the truck are significantly simplified, and maintenance is more convenient. Thus, noise pollution and emission pollution are greatly reduced, and comfort of a driver's working environment is improved. Compared with the conventional electric wheel dump truck, the electric mining dump truck does not consume excessive fuel. Because electricity costs much less than oil, using a pure electric dump truck can reduce operating costs of mine, and bring quite considerable economic benefits.
- The foregoing descriptions are merely preferred embodiments of the present disclosure, but are not intended to limit the present disclosure. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present disclosure should fall within the scope of the present disclosure.
Claims (10)
- An electric mining dump truck, comprising a frame, an axle, an electric wheel assembly, a power battery assembly, an electric control system, a hydraulic system, a cooling system, a bed and a cab assembly, whereinthe cab assembly is disposed on a front end of the frame; the bed is mounted on a rear end of the frame;the axle includes a front axle and a rear axle, the front axle and the rear axle being mounted on the front end and the rear end of the frame, respectively, the electric wheel assembly being mounted on the rear axle;the power battery assembly comprises a battery cabinet configured to supply electric energy to various electric components;the electric control system is configured to control the electric wheel assembly, the power battery assembly, the hydraulic system and the cooling system; the hydraulic system is configured to provide hydraulic oil for various types of hydraulic apparatuses; and the cooling system is configured to cool various heat generation and heat transfer components.
- The electric mining dump truck according to claim 1, wherein the frame is a box-girder frame which comprises two longitudinal beams disposed on both sides, and the battery cabinet comprises a frame battery cabinet mounted on the frame, a supporting and fixing structure for fixedly mounting the frame battery cabinet being provided on the two longitudinal beams.
- The electric mining dump truck according to claim 2, wherein the supporting and fixing structure comprises saddles symmetrically disposed over the two longitudinal beams and brackets disposed underneath the two longitudinal beams, at least a portion of the frame battery cabinet being supported and fixed in space between the two longitudinal beams by means of the saddles and the brackets.
- The electric mining dump truck according to claim 3, wherein the frame battery cabinet comprises a first battery cabinet and a second battery cabinet;the supporting and fixing structure comprises a first supporting and fixing structure and a second supporting and fixing structure that are disposed in a front-to-rear direction of the truck; whereinthe first supporting and fixing structure comprises a first saddle symmetrically disposed over the two longitudinal beams and a first bracket disposed underneath the two longitudinal beams, the first battery cabinet being fixed on the first saddle and the first bracket; andthe second supporting and fixing structure comprises a second saddle symmetrically disposed over the two longitudinal beams and a second bracket disposed underneath the two longitudinal beams, the second battery cabinet being fixed on the second saddle and the second bracket.
- The electric mining dump truck according to claim 3, wherein mounting holes are provided on all of the frame battery cabinet, the brackets and the saddles, the frame battery cabinet being fixedly connected to the brackets and the saddles through mating of bolts and the mounting holes; wherein
rubber cushions are further mounted between the brackets and the frame battery cabinet and between the saddles and the frame battery cabinet. - The electric mining dump truck according to claim 4, wherein an operating platform is provided on the electric mining dump truck, the cab assembly being mounted on a left side of the operating platform, the battery cabinet further comprising a platform battery cabinet mounted on the operating platform; and
the electric control system is integrated in an electric control cabinet, the platform battery cabinet comprising a third battery cabinet, the third battery cabinet and the electric control cabinet being mounted on the operating platform. - The electric mining dump truck according to claim 1, wherein the hydraulic system comprises a first drive motor, a second drive motor, a single vane pump, a double vane pump, a plunger pump, a lifting hydraulic cylinder, a steering cylinder and an energy accumulator; whereinthe single vane pump is driven by the first drive motor, a hydraulic oil outlet of the single vane pump being communicated to the lifting hydraulic cylinder through a pipe; andthe double vane pump and the plunger pump are connected in series, both being driven by the second drive motor, a hydraulic oil outlet of the plunger pump being connected to the steering cylinder and the energy accumulator, respectively.
- The electric mining dump truck according to claim 1, wherein the cooling system comprises a hydraulic oil cooling system, a hydraulic drive motor cooling system, an electric wheel cooling system and a battery air conditioning electric control cabinet cooling system.
- The electric mining dump truck according to claim 8, wherein the electric wheel cooling system comprises a right electric wheel cooling subsystem mounted on a right side of the rear axle for cooling a right electric wheel, and a left electric wheel cooling subsystem mounted on a left side of the rear axle for cooling a left electric wheel; whereinthe right electric wheel cooling subsystem comprises an oil filter, an oil pump motor, a heat exchanger, a high pressure water pump and a right heat sink;the high pressure water pump is disposed between the right heat sink and the heat exchanger, the right heat sink, the high pressure water pump and the heat exchanger forming a cooling water loop;the oil pump motor and the oil filter are disposed between the heat exchanger and the right electric wheel, the heat exchanger, the oil pump motor, the oil filter and the right electric wheel forming a cooling oil loop;the left electric wheel cooling subsystem comprises an oil filter, an oil pump motor, a heat exchanger, a high pressure water pump and a left heat sink;the high pressure water pump is disposed between the left heat sink and the heat exchanger, the left heat sink, the high pressure water pump and the heat exchanger forming a cooling water loop; andthe oil pump motor and the oil filter are disposed between the heat exchanger and the left electric wheel, the heat exchanger, the oil pump motor, the oil filter and the left electric wheel forming a cooling oil loop.
- The electric mining dump truck according to claim 9, wherein the oil filters, the oil pump motors and the heat exchangers in the right electric wheel cooling subsystem and the left electric wheel cooling subsystem are symmetrically arranged inside the frame; and the left heat sink and the right heat sink are symmetrically suspended on a lower portion of a front end of the truck.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201610496246.1A CN107539192B (en) | 2016-06-29 | 2016-06-29 | A kind of electronic mine dumper |
PCT/CN2017/083651 WO2018000944A1 (en) | 2016-06-29 | 2017-05-09 | Electric mining dump truck |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3480050A1 true EP3480050A1 (en) | 2019-05-08 |
EP3480050A4 EP3480050A4 (en) | 2019-05-22 |
Family
ID=60786662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17818941.1A Withdrawn EP3480050A4 (en) | 2016-06-29 | 2017-05-09 | Electric mining dump truck |
Country Status (4)
Country | Link |
---|---|
US (1) | US11220167B2 (en) |
EP (1) | EP3480050A4 (en) |
CN (1) | CN107539192B (en) |
WO (1) | WO2018000944A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110803034A (en) * | 2019-11-05 | 2020-02-18 | 广州电力机车有限公司 | Improved electric power mining vehicle |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107539192B (en) * | 2016-06-29 | 2019-08-13 | 比亚迪股份有限公司 | A kind of electronic mine dumper |
CN108638884B (en) * | 2018-05-14 | 2021-06-29 | 绍兴市日杰建筑科技有限公司 | New forms of energy electric bus |
CN109624680A (en) * | 2018-12-07 | 2019-04-16 | 湖北金诚信矿业服务有限公司 | A kind of electric LHD |
CN109532444A (en) * | 2019-01-09 | 2019-03-29 | 湖北金诚信矿业服务有限公司 | A kind of electric LHD |
CN110304176A (en) * | 2019-06-28 | 2019-10-08 | 大连日牵电机有限公司 | A kind of modification scheme of mining fuel wide dumper pure electric vehicle |
CN110341501A (en) * | 2019-07-30 | 2019-10-18 | 河南赐福重工股份有限公司 | A kind of off-highway rigid dumper of pure electric vehicle |
WO2021069069A1 (en) | 2019-10-09 | 2021-04-15 | Ejzenberg Geoffrey | A cyber-physical hybrid electric autonomous or semi-autonomous off-highway dump truck for surface mining industry |
CN114537242B (en) * | 2022-03-15 | 2023-10-27 | 福建宏大时代新能源科技有限公司 | 100-ton-level pure-electric-driven mining dump truck |
CN116373715A (en) * | 2023-06-05 | 2023-07-04 | 湘电重型装备有限公司 | Large-tonnage pure electric wheel dumper |
Family Cites Families (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR9607876A (en) * | 1995-03-31 | 1999-11-30 | Bhp Au Coal Pty Ltd | Suspension for large dump trucks. |
JPH11264871A (en) * | 1998-03-17 | 1999-09-28 | Komatsu Ltd | Monitoring mechanism for obstacle detection device for vehicle |
BRPI0822300A2 (en) * | 2008-02-29 | 2019-09-24 | Volvo Constr Equip Ab | a hybrid electric work machine |
JP4865780B2 (en) * | 2008-11-12 | 2012-02-01 | 日立建機株式会社 | Traveling device |
JP5185846B2 (en) * | 2009-01-28 | 2013-04-17 | 日立建機株式会社 | Travel drive device for work vehicle |
US8925661B2 (en) * | 2010-07-15 | 2015-01-06 | Hitachi Construction Machinery Co., Ltd. | Electric working vehicle |
US9030063B2 (en) * | 2010-12-17 | 2015-05-12 | Tesla Motors, Inc. | Thermal management system for use with an integrated motor assembly |
US20120217074A1 (en) | 2011-02-28 | 2012-08-30 | Rudinec Stephen A | All-Electric Powered Vehicle |
JP5496973B2 (en) * | 2011-09-06 | 2014-05-21 | 日立建機株式会社 | Dump truck travel drive device |
JP5811830B2 (en) * | 2011-12-22 | 2015-11-11 | 株式会社デンソー | Battery pack |
AU2013227684B2 (en) * | 2012-02-29 | 2016-04-28 | Hitachi Construction Machinery Co., Ltd. | Steering device for vehicle |
JP5824406B2 (en) * | 2012-04-20 | 2015-11-25 | 日立建機株式会社 | Electric drive vehicle |
CN102700615A (en) * | 2012-06-28 | 2012-10-03 | 湘电重型装备股份有限公司 | Electric wheel dump truck |
JP5829998B2 (en) * | 2012-06-29 | 2015-12-09 | 日立建機株式会社 | Dump truck travel drive device |
JP5411976B1 (en) * | 2012-09-21 | 2014-02-12 | 株式会社小松製作所 | Work vehicle periphery monitoring system and work vehicle |
JP5550695B2 (en) * | 2012-09-21 | 2014-07-16 | 株式会社小松製作所 | Work vehicle periphery monitoring system and work vehicle |
CN202986858U (en) * | 2012-11-28 | 2013-06-12 | 赵国文 | Rotary electric mine car |
DE102013021607A1 (en) * | 2013-09-27 | 2015-04-02 | Liebherr-Components Biberach Gmbh | Self-propelled work machine and method for braking such a work machine |
CN103738194B (en) * | 2014-01-14 | 2015-03-04 | 包头市北工机械有限公司 | Electrically-driven mining truck |
WO2015129004A1 (en) * | 2014-02-27 | 2015-09-03 | 株式会社小松製作所 | Dump truck |
US9889882B2 (en) * | 2014-02-27 | 2018-02-13 | Komatsu Ltd. | Dump truck |
JP2015199368A (en) * | 2014-04-04 | 2015-11-12 | 日立建機株式会社 | trolley type dump truck |
WO2015162801A1 (en) * | 2014-04-25 | 2015-10-29 | 株式会社小松製作所 | Surroundings-monitoring system, work vehicle, and surroundings-monitoring method |
DE102015006225B4 (en) * | 2014-07-14 | 2023-05-04 | Liebherr-Mining Equipment Colmar Sas | Work machine, in particular dump truck or truck |
EP3203340A4 (en) * | 2014-09-30 | 2018-06-13 | Hitachi Construction Machinery Co., Ltd. | Delivery vehicle |
JP6438266B2 (en) * | 2014-10-20 | 2018-12-12 | 日立建機株式会社 | Dump truck |
CN204222827U (en) * | 2014-10-28 | 2015-03-25 | 广州电力机车有限公司 | A kind of quarry tipper is walked on stage |
CA2896342C (en) * | 2014-10-30 | 2017-11-07 | Komatsu Ltd. | System for managing mining machine and method for managing mining machine |
KR101679927B1 (en) * | 2014-12-09 | 2016-12-06 | 현대자동차주식회사 | System for cooling in electric vehicle and method thereof |
CN204936851U (en) * | 2015-08-04 | 2016-01-06 | 中冶京诚(湘潭)矿山装备有限公司 | A kind of mine electric wheel dump |
CN107428366B (en) * | 2015-10-05 | 2020-01-07 | 日立建机株式会社 | Steering control device for working vehicle |
JP6495815B2 (en) * | 2015-12-28 | 2019-04-03 | 日立建機株式会社 | Electric drive dump truck |
JP6475178B2 (en) * | 2016-03-10 | 2019-02-27 | 日立建機株式会社 | Electric drive vehicle |
US10570971B2 (en) * | 2016-03-16 | 2020-02-25 | Komatsu Ltd. | Work vehicle |
US10486656B2 (en) * | 2016-03-16 | 2019-11-26 | Komatsu Ltd. | Parking brake system for a work vehicle |
CN107539192B (en) * | 2016-06-29 | 2019-08-13 | 比亚迪股份有限公司 | A kind of electronic mine dumper |
JP6532167B2 (en) * | 2016-09-14 | 2019-06-19 | 日立建機株式会社 | Electric drive mining vehicle and brake operation guide method therefor |
JP6695305B2 (en) * | 2017-06-12 | 2020-05-20 | 日立建機株式会社 | Work vehicle running device |
JP6695311B2 (en) * | 2017-09-19 | 2020-05-20 | 日立建機株式会社 | Electric drive vehicle |
WO2020041630A1 (en) * | 2018-08-24 | 2020-02-27 | Hexagon Purus North America Holdings Inc. | Battery system for heavy duty vehicles |
US20200249035A1 (en) * | 2019-02-01 | 2020-08-06 | Caterpillar Inc. | Automatic Target Selection for Worksite Spotting |
US11043707B2 (en) * | 2019-04-19 | 2021-06-22 | Hexagon Purus North America Holdings Inc. | Electric front end accessory devices assembly |
US11498410B2 (en) * | 2019-10-23 | 2022-11-15 | Deere & Company | Powered axle for dual wheel work vehicle |
-
2016
- 2016-06-29 CN CN201610496246.1A patent/CN107539192B/en active Active
-
2017
- 2017-05-09 WO PCT/CN2017/083651 patent/WO2018000944A1/en unknown
- 2017-05-09 US US16/314,296 patent/US11220167B2/en active Active
- 2017-05-09 EP EP17818941.1A patent/EP3480050A4/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110803034A (en) * | 2019-11-05 | 2020-02-18 | 广州电力机车有限公司 | Improved electric power mining vehicle |
Also Published As
Publication number | Publication date |
---|---|
US11220167B2 (en) | 2022-01-11 |
CN107539192A (en) | 2018-01-05 |
CN107539192B (en) | 2019-08-13 |
EP3480050A4 (en) | 2019-05-22 |
WO2018000944A1 (en) | 2018-01-04 |
US20210229583A1 (en) | 2021-07-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11220167B2 (en) | Electric mining dump truck | |
RU2608988C2 (en) | Electric drive module for vehicle, in particular, truck | |
JP7042160B2 (en) | Electric vehicle | |
WO2023231227A1 (en) | Power system and electric wheel device | |
CN114872536A (en) | Multi-power hybrid transmission system and electric wheel device | |
CN102180084A (en) | Overall electric automobile cabin auxiliary system installation structure | |
CN109109642A (en) | A kind of electric vehicle | |
CN216993865U (en) | Pure alternating current electric wheel dumper | |
CN218505646U (en) | Mechanical structure for bearing power battery installed on 50-ton pure electric mining dump truck | |
CN214607040U (en) | Electric transmission large-tonnage wide-body vehicle | |
CN114104114A (en) | Distributed chassis of port container transport vehicle | |
CN110203221A (en) | Subway hydraulic power operation vehicle for contact wire | |
CN206749896U (en) | A kind of automobile chassis structures | |
CN106553512A (en) | Sweeping machine | |
CN113978228A (en) | Pure alternating current electric wheel dumper | |
CN209305321U (en) | A kind of electric vehicle | |
JP2002067705A (en) | Parallel hybrid electric truck | |
CN219883666U (en) | Dual-motor drive-reducing assembly and heavy electric tractor | |
CN209921047U (en) | Pure electric heavy transport engineering vehicle | |
CN208559502U (en) | A kind of pure electric vehicle load-carrying vehicle integrated base plate | |
CN204998323U (en) | Electricelectric moves chassis arrangement structure who mends trolley -bus | |
CN108569183A (en) | The non-maintaining electric self-unloading car of 110t 4 wheel drivens | |
CN110341501A (en) | A kind of off-highway rigid dumper of pure electric vehicle | |
CN110920417A (en) | Pure electric transport vehicle | |
CN205800795U (en) | A kind of vapour vehicle wheel limit drive assembly |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190129 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 20190426 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: B60K 1/00 20060101ALI20190418BHEP Ipc: B60L 50/50 20190101AFI20190418BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
18W | Application withdrawn |
Effective date: 20190903 |